What is this, no one's mentioned Bionic Commando: Elite Forces yet? It is famously capable of hanging when played on a GBA.
http://www.digitpress.com/forum/showthread.php?t=9748

There was also a blurb in Nintendo Power long, long ago regarding the sound effects in some of the old GB arcade classics (such as Galaxian). Apparently they would actually glitch on a Game Boy Pocket, but not the original GB. (Recall that the GBP used a very slightly different Z80 processor.)